EP0187368B1 - Apparatus for joining an optical fibre cable to a junction box - Google Patents
Apparatus for joining an optical fibre cable to a junction box Download PDFInfo
- Publication number
- EP0187368B1 EP0187368B1 EP85116463A EP85116463A EP0187368B1 EP 0187368 B1 EP0187368 B1 EP 0187368B1 EP 85116463 A EP85116463 A EP 85116463A EP 85116463 A EP85116463 A EP 85116463A EP 0187368 B1 EP0187368 B1 EP 0187368B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- junction box
- optical fibre
- joining
- fibre cable
- fibers
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4415—Cables for special applications
- G02B6/4427—Pressure resistant cables, e.g. undersea cables
- G02B6/4428—Penetrator systems in pressure-resistant devices
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4439—Auxiliary devices
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4439—Auxiliary devices
- G02B6/4471—Terminating devices ; Cable clamps
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/47—Molded joint
- Y10T403/473—Socket or open cup for bonding material
Definitions
- the present invention relates to a device for connection to a junction box of a fiber optic cable and to a non-metallic axial support element, in particular for grounding cables for high voltage lines.
- such a device is relatively complex and is not well suited for the connection of a cable with a non-metallic axial load-bearing element, in particular guard cables with a tubular structure or with a central rod provided with grooves for housing the optical fibers, with an element axial carrier in composite material (glass fibers-epoxy resin, glass fibers-polyester resin, aromatic polyamide-polyester resin fibers) or braid of non-metallic fibers with high resistance (carbon fibers).
- composite material glass fibers-epoxy resin, glass fibers-polyester resin, aromatic polyamide-polyester resin fibers
- braid of non-metallic fibers with high resistance carbon fibers
- European patent application EP-A 0 184 050 also in the name of the applicant (state of the art according to article 54 (3) cBE) also describes a device for connection to a junction box of a fiber cable optical and axial bearing element of composite material comprising fibers, or braid of fibers, according to which at the end of the axial element the fibers of the composite material or of the braid of this element are spread out in a tassel and immobilized in a cold polymerized resin filling a cavity integral with the housing.
- the object of the present invention is to provide a connection device which ensures excellent locking of the cable end in the housing, and allows this end to withstand forces corresponding to an elongation of at least 0.8% without breaking. nor sliding, while being of a simple structure and easy to implement.
- the device according to the invention is characterized in that the end of the axial support element is bent in a swan neck and immobilized in a cold polymerized resin, filling a cavity integral with the housing.
- a device for connecting an underwater cable with a central grooved plastic rod and a composite axial carrier element made of glass fibers- epoxy resin, to a junction box It is described below, by way of example and with reference to the single figure of the drawing, a device for connecting an underwater cable with a central grooved plastic rod and a composite axial carrier element made of glass fibers- epoxy resin, to a junction box.
- the central rod 1 with an axial carrier element 2 ends in a swan neck 3, embedded in a mass of epoxy resin 4 disposed in a cavity 5 integral with the junction box.
- the optical fibers move away from the central rod 1 before it enters the cavity 4. They are connected to the optical fibers coming from the end of another cable, in a cavity disposed in the housing, in known manner, ensuring a longer connection length, for example in a manner analogous to the structure described in document FR-A-2 524 986.
- a fracture and slip resistance test was carried out on a plastic rod with an axial load-bearing element made of glass fiber-resin composite arranged vertically and blocked at each end by a swan neck in a housing filled with resin cold-cured epoxy.
- the lower housing was subjected to a tensile force imparting an elongation of 1% to the rod. No break or slippage was found after a 2-month observation period.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Coupling Of Light Guides (AREA)
- Cable Accessories (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Insulators (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Insulated Conductors (AREA)
Description
La présente invention concerne un dispositif de raccordement à un boîtier de jonction d'un câble à fibres optiques et à élément porteur axial non métallique, notamment pour câbles de garde pour lignes à haute tension.The present invention relates to a device for connection to a junction box of a fiber optic cable and to a non-metallic axial support element, in particular for grounding cables for high voltage lines.
On a déjà proposé dans la demande de brevet FR-A-2 524 986 de la Demanderesse un dispositif de jonction des extrémités de deux câbles sous-marins à fibres optiques, possédant chacun un coeur optique, une voûte en fils d'acier, un tube de cuivre rétreint sur la voûte, une gaine isolante, un conducteur de retour et une gaine de protection, comprenant à l'extrémité de chaque câble une pièce d'ancrage, une bague d'épanouissement des fils d'acier et un remplissage en résine durcissable dans lequel sont collées les extrémités des fils d'acier, bloquées entre les pièces d'ancrage et les bagues d'épanouissement.We have already proposed in the patent application FR-A-2 524 986 of the Applicant a device for joining the ends of two optical fiber submarine cables, each having an optical core, a steel wire vault, a copper tube shrunk on the vault, an insulating sheath, a return conductor and a protective sheath, comprising at the end of each cable an anchoring piece, a ring for developing the steel wires and a filling in curable resin in which the ends of the steel wires are glued, trapped between the anchoring parts and the flourishing rings.
Un tel dispositif est cependant relativement complexe et ne convient pas bien pour le raccordement d'un câble à élément porteur axial non métallique, notamment de câbles de garde à structure tubulaire ou à jonc central muni de rainures de logement des fibres optiques, avec un élément porteur axial en matériau composite (fibres de verre-résine époxy, fibres de verre-résine polyester, fibres de polyamide aromatique-résine polyester) ou en tresse de fibres non métalliques à résistance élevée (fibres de carbone). L'extrémité de tels câbles doit en effet être parfaitement bloquée dans le boîtier de raccordement et pouvoir supporter des efforts correspondant à un allongement d'au moins 0,8% sans subir de rupture ou de glissement.However, such a device is relatively complex and is not well suited for the connection of a cable with a non-metallic axial load-bearing element, in particular guard cables with a tubular structure or with a central rod provided with grooves for housing the optical fibers, with an element axial carrier in composite material (glass fibers-epoxy resin, glass fibers-polyester resin, aromatic polyamide-polyester resin fibers) or braid of non-metallic fibers with high resistance (carbon fibers). The end of such cables must indeed be perfectly locked in the connection box and be able to withstand forces corresponding to an elongation of at least 0.8% without undergoing rupture or slipping.
La demande de brevet européen EP-A 0 184 050 également au nom de la demanderesse (état de la technique selon l'article 54(3) cBE) décrit par ailleurs un dispositif de raccordement à un boîtier de jonction d'un câble à fibres optiques et à élément porteur axial en matériau composite comprenant des fibres, ou en tresse de fibres, selon lequel à l'extrémité de l'élément axial les fibres du matériau composite ou de la tresse de cet élément sont epanouies en une houppe et immobilisées dans une résine polymérisée à froid remplissant une cavité solidaire du boîtier.European patent application EP-A 0 184 050 also in the name of the applicant (state of the art according to article 54 (3) cBE) also describes a device for connection to a junction box of a fiber cable optical and axial bearing element of composite material comprising fibers, or braid of fibers, according to which at the end of the axial element the fibers of the composite material or of the braid of this element are spread out in a tassel and immobilized in a cold polymerized resin filling a cavity integral with the housing.
La présente invention a pour but de procurer un dispositif de raccordement qui assure un excellent blocage de l'extrémité de câble dans le boîtier, et permette à cette extrémité de supporter des efforts correspondant à un allongement d'au moins 0,8% sans rupture ni glissement, tout en étant d'une structure simple et facile à mettre en oeuvre.The object of the present invention is to provide a connection device which ensures excellent locking of the cable end in the housing, and allows this end to withstand forces corresponding to an elongation of at least 0.8% without breaking. nor sliding, while being of a simple structure and easy to implement.
Le dispositif selon l'invention est caractérisé en ce que l'extrémité de l'élément porteur axial est recourbée en col de cygne et immobilisée dans une résine polymérisée à froid, remplissant une cavité solidaire du boîtier.The device according to the invention is characterized in that the end of the axial support element is bent in a swan neck and immobilized in a cold polymerized resin, filling a cavity integral with the housing.
Il est décrit ci-après, à titre d'exemple et en référence à la figure unique du dessin, un dispositif de raccordement d'un câble sous-marin à jonc central rainuré en matière plastique et élément porteur axial composite en fibres de verre-résine époxy, à un boîtier de jonction.It is described below, by way of example and with reference to the single figure of the drawing, a device for connecting an underwater cable with a central grooved plastic rod and a composite axial carrier element made of glass fibers- epoxy resin, to a junction box.
Le jonc central 1 à élément porteur axial 2 se termine par un col de cygne 3, noyé dans une masse de résine époxy 4 disposée dans une cavité 5 solidaire du boîtier de jonction. Les fibres optiques, non représentées, s'écartent du jonc central 1 avant qu'il ne pénètre dans la cavité 4. Elles sont raccordées aux fibres optiques provenant de l'extrémité d'un autre câble, dans une cavité disposée dans le boîtier, de manière connue, assurant une surlongueur de raccordement, par exemple de façon analogue à la structure décrite dans le document FR-A-2 524 986.The central rod 1 with an axial carrier element 2 ends in a
On a effectué un essai de résistance à la rupture et au glissement sur un jonc en matière plastique à élément porteur axial en composite fibres de verre-résine disposé verticalement et bloqué à chaque extrémité par un col de cygne dans un boîtier rempli d'une résine époxy polymérisée à froid. Le boîtier inférieur était soumis à un effort de traction imprimant au jonc un allongement de 1 %. Il n'a été constaté aucune rupture ni aucun glissement à l'issue d'une période d'observation de 2 mois.A fracture and slip resistance test was carried out on a plastic rod with an axial load-bearing element made of glass fiber-resin composite arranged vertically and blocked at each end by a swan neck in a housing filled with resin cold-cured epoxy. The lower housing was subjected to a tensile force imparting an elongation of 1% to the rod. No break or slippage was found after a 2-month observation period.
On a par ailleurs effectué des essais comparatifs de résistance à la traction sur des éléments porteurs de 200 mm de long, comportant à chaque extrémité un tronçon de 140 mm noyé dans une résine époxy remplissant une cavité, d'une part avec un élément porteur à tronçons d'extrémité rectilignes, d'autre part avec un élément porteur à tronçons d'extrémité recourbés en col de cygne. Une première série d'essais a été effectuée avec un élément porteur en composite fibres de verre-résine époxy à fibres de 0,9 mm de diamètre commercialisé sous la désignation "Grillo ZEV", sur lequel on a mesuré la résistance à la rupture par traction Rr (en daN), l'allongement à la rupture Ar (en %) et la résistance à la rupture par unité de section transversale TR (en mégapascals).In addition, comparative tensile strength tests were carried out on load-bearing elements 200 mm long, comprising at each end a 140 mm section embedded in an epoxy resin filling a cavity, on the one hand with a load-bearing element. rectilinear end sections, on the other hand with a support element with curved end sections in swan neck. A first series of tests was carried out with a carrier element made of a glass fiber-epoxy resin composite with 0.9 mm diameter fibers sold under the designation "Grillo ZEV", on which the breaking strength was measured by tensile strength Rr (in daN), elongation at break Ar (in%) and tensile strength per unit of cross section TR (in megapascals).
Les résultats de ces essais sont résumés dans les tableaux 1 et Il ci-dessous:
On a effectué une seconde série d'essais analogues comparatifs sur un élément porteur en composite fibres de verre-résine époxy à fibres de verre de 0,75 mm de diamètre, commercialisé sous la dénomination "Neptco LLE".A second series of similar comparative tests was carried out on a carrier element made of a glass fiber-epoxy resin composite with glass fibers 0.75 mm in diameter, sold under the name "Neptco LLE".
Les résultats de ces essais sont résumés dans les tableaux III et IV ci-dessous :
On observe donc avec les deux séries d'essai que la présence d'une extrémité en col de cygne procure une augmentation importante de la résistance à la traction et tend à réduire les glissements de l'extrémité du jonc sous tension.It is therefore observed with the two test series that the presence of a swan neck end provides a significant increase in tensile strength and tends to reduce slippage of the end of the rod under tension.
Claims (1)
- A connection device between a junction box and an optical fibre cable having a non-metallic axial strength member (1, 2), characterized in that the end of the axial strength member (1, 2) is curved into a swan-nack shape (3) and immobilized in cold polymerized resin which fills a cavity integral with the box.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8420044 | 1984-12-28 | ||
| FR8420044A FR2575558B1 (en) | 1984-12-28 | 1984-12-28 | DEVICE FOR CONNECTING AN OPTICAL FIBER CABLE TO A JUNCTION BOX |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0187368A1 EP0187368A1 (en) | 1986-07-16 |
| EP0187368B1 true EP0187368B1 (en) | 1990-01-17 |
Family
ID=9311113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP85116463A Expired - Lifetime EP0187368B1 (en) | 1984-12-28 | 1985-12-23 | Apparatus for joining an optical fibre cable to a junction box |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US4790626A (en) |
| EP (1) | EP0187368B1 (en) |
| JP (1) | JPS61158305A (en) |
| CA (1) | CA1302755C (en) |
| DE (1) | DE3575476D1 (en) |
| FR (1) | FR2575558B1 (en) |
| NO (1) | NO166153C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4900123A (en) * | 1988-08-29 | 1990-02-13 | Gte Products Corporation | 1550 nm fiber distribution panel |
| WO1994024598A1 (en) * | 1993-04-16 | 1994-10-27 | Raychem Corporation | Bonding assembly for fiber optic cable and associated method |
| US6015953A (en) * | 1994-03-11 | 2000-01-18 | Tohoku Electric Power Co., Inc. | Tension clamp for stranded conductor |
| PT875015E (en) * | 1996-01-17 | 2000-04-28 | Siemens Ag | CABLE SLEEVE FOR OPTICAL FIBER CONDUCTORS WITH JUNCTION BOXES AND EXTENSION WINDINGS |
| JP3867273B2 (en) * | 2002-12-04 | 2007-01-10 | 株式会社オーシーシー | Optical fiber retainer |
| CN102150227B (en) * | 2008-10-10 | 2013-05-15 | 松下电器产业株式会社 | Electrode foil for capacitor, manufacturing method therefor, and solid electrolytic capacitor using the electrode foil |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0184050A1 (en) * | 1984-11-16 | 1986-06-11 | LES CABLES DE LYON Société anonyme dite: | Device for joining a fibre-optic cable and a junction box, and process for manufacturing said device |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2266357A (en) * | 1939-11-21 | 1941-12-16 | Lane Wells Co | Releasable cable head |
| US4217028A (en) * | 1978-07-24 | 1980-08-12 | International Telephone And Telegraph Corporation | Fiber optic electromechanical submarine cable termination |
| GB2079485B (en) * | 1980-07-08 | 1984-07-25 | Standard Telephones Cables Ltd | Armoured wire splices |
| FR2507331A1 (en) * | 1981-06-05 | 1982-12-10 | Cables De Lyon Geoffroy Delore | DEVICE FOR JOINING THE ENDS OF TWO FIBER OPTIC SUBMARINE CABLES |
| FR2519149B1 (en) * | 1981-12-30 | 1985-07-26 | Cables De Lyon Geoffroy Delore | DEVICE FOR JOINING THE END OF TWO OPTICAL FIBER SUBMARINE CABLES AND ITS MANUFACTURING METHOD |
| FR2523731A1 (en) * | 1982-03-17 | 1983-09-23 | Cables De Lyon Geoffroy Delore | CABLE HEAD FOR OPTICAL FIBER IMMIGIBLE CABLE |
| FR2524986A1 (en) * | 1982-04-08 | 1983-10-14 | Cables De Lyon Geoffroy Delore | DEVICE FOR JOINING THE ENDS OF TWO FIBER OPTIC SUBMARINE CABLES |
| JPS5974516A (en) * | 1982-10-20 | 1984-04-27 | Furukawa Electric Co Ltd:The | Connection part of jelly-charged optical fiber cable |
| US4674832A (en) * | 1984-10-12 | 1987-06-23 | Fujikura Ltd. | End assembly for connection to end of ground wire with optical fiber |
-
1984
- 1984-12-28 FR FR8420044A patent/FR2575558B1/en not_active Expired
-
1985
- 1985-12-20 NO NO855190A patent/NO166153C/en unknown
- 1985-12-23 DE DE8585116463T patent/DE3575476D1/en not_active Expired - Fee Related
- 1985-12-23 EP EP85116463A patent/EP0187368B1/en not_active Expired - Lifetime
- 1985-12-24 JP JP60291795A patent/JPS61158305A/en active Pending
- 1985-12-27 CA CA000498664A patent/CA1302755C/en not_active Expired - Fee Related
-
1987
- 1987-10-07 US US07/105,364 patent/US4790626A/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0184050A1 (en) * | 1984-11-16 | 1986-06-11 | LES CABLES DE LYON Société anonyme dite: | Device for joining a fibre-optic cable and a junction box, and process for manufacturing said device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61158305A (en) | 1986-07-18 |
| EP0187368A1 (en) | 1986-07-16 |
| FR2575558B1 (en) | 1987-01-30 |
| CA1302755C (en) | 1992-06-09 |
| US4790626A (en) | 1988-12-13 |
| FR2575558A1 (en) | 1986-07-04 |
| NO855190L (en) | 1986-06-30 |
| DE3575476D1 (en) | 1990-02-22 |
| NO166153B (en) | 1991-02-25 |
| NO166153C (en) | 1991-06-05 |
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